This interface has a pair of pre and post method definitions for each application service method of the present. A service extension class has to implement this interface. The ‘pre’ method is the pre-extension hook as explained before. Similarly the ‘post’ method is the post-extension hook.

Multiple implementations can be defined for a particular service. The service extensions executor invokes all the implementations defined for the particular service both before and after the actual service executes. The signatures of these methods are:

public void pre<Method_Name>(SessionContext, <Method_Parameters>) throws Exception;

public void post<Method_Name>(SessionContext, <Method_Parameters>, ResponseDTO) throws Exception;

Naming Convention

The naming convention of service extension interface is

I<Service_Name>Ext

For example, consider below code sample.